9. Beating Four Super Mario Games At The Same Time With The Same Controller
My mind seriously cannot fathom how this is even humanly possible. Bear in mind that the video below
is, to be fair, a tool-assisted run, meaning that the player used a program to sync the speeds of each game up to one another before play to ensure that there wouldn't be any disparity between them, and of course, the games were being played simultaneously on an emulator rather than on some complicated, custom console set-up, but watch below and you'll be mightily impressed at the mental concentration it requires. Watch as all characters jump and move about the screen at the same time, not only demonstrating how similar structurally the earlier Super Mario games are, but the borderline-autistic level of mental acuity you'd need to focus on four screens at once. Staggering.